I find it a bit annoying that if I change a class method declaration a bit, let's say:

int foo(int f);

to

int foo();

...I cannot anymore Ctrl+Left click the method declaration and go to the corresponding definition in the cpp file because the signature doesn't exactly match anymore. Nothing happens. It would be nice to still allow jumping to the definition if this method was the only version of foo() - despite the now different signature. This would make refactoring code a bit easier.